this is just one of three investigations linked to hernandez. he has pleaded not guilty in the shooting death of oden lloyd. mary? >> all right, denise. thank you. hernandez is under investigation by another grand jury in boston for an unsolved double homicide, outside a nightclub in 2012. >>> the port of baltimore is touting the excellent grade it received from the coast guard for the changes its made to security. mike schuh explains, the state has spent millions, upgrading systems. >> reporter: port of baltimore isn't one area. it's six. and all six need to be secure. access limited to those who need to be there. and denied to those who don't. because... >> they are targets for terrorist activity. >> reporter: the port now has layers of security. three federal agencies, local and state police, as well as private contractors. >> reporter: security is compicated. anyone can just float up to your dock. while it's not easy to scramble up to a comoacial dock, it's -- commercial dock, it's one of the things they have to be prepared for. >> realtime